In/russia/mco/fixes/you

Fixes for mcollective so students can run mco as user peadmin from their VM
  - copy the certs for peadmin stored in /var/lib/peadmin/.mcollective.d

Fixes for kickstand, so it works as expected
  - fix path to public folder
  - cache two OS packages needs during the kickstart

New versions of pltraining/kickstand and pltraining/advanced published to the Forge.